20231001221200 has 360 divisors, whose sum is σ = 61131996746240. Its totient is φ = 6298072704000.

The previous prime is 20231001221177. The next prime is 20231001221201. The reversal of 20231001221200 is 212210013202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231001221201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 280829185 + ... + 280901215.

Almost surely, 2^{20231001221200} is an apocalyptic number.

20231001221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20231001221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30565998373120).

20231001221200 is an abundant number, since it is smaller than the sum of its proper divisors (40900995525040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20231001221200 is a wasteful number, since it uses less digits than its factorization.

20231001221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72907 (or 72885 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20231001221200 its reverse (212210013202), we get a palindrome (20443211234402).

The spelling of 20231001221200 in words is "twenty trillion, two hundred thirty-one billion, one million, two hundred twenty-one thousand, two hundred".